Ventilatob



" July 24, l923- 1,462,924

G. c. WALKER VENTILATOR Filed Nov. 26. 1921 2 Sheets-Sheet l Er over Il. Walker (1Mo/and;

G. C. AWALKER ally 24, 1923 VENTILATOR Filed'Nov. ze, 1921 2 sheets-sheet 2 jvmmnto/L En* DVE? E. Walker @Henna/17 Patented-July 24, 1923.

@UNITED STATES Gnovnn o. WALKER, or CHICAGO, ILLINOIS.

VENTILATOR.

Application filed November 26, 1921. Serial No. 517,850.

To all `whom it 'may concer/1t:

Be it known that I, Gnovnn C. VALIrnn, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements inVentilators, of which the following is a specification, reference being had tothe accompanying drawings.

This invention relates to ventilators of the character disclosed in my prior Patent #966,497l of August 9, 1910, and the general object of the invention is to improve the details of construction of the ventilator therein shown, and particularly to improve the manner in which the shutters are pivotally supported, the manner in which the shutters are connected to the shutter operatingrod,

and to provide-means for screening the air which enters the car;

A further object is to improve the form of the tubular air duct and its manner of connection to the other parts of the ventilator.

Other objects have to do with the details ofconstruction and arrangement of parts as will appear hereinafter.

My invention is illustrated in the accompanying' drawings, wherein Figure 1 is a fragmentary side elevation of a vehicle with my ventilator applied thereto;

`Figure 2 is a bottom plan view of the ventilator;

Jber has three sides.

Figure 3 is an end elevation of the ventilator;

Figure 4 is a front elevation of the ventilater' Y Figure 5 is a longitudinal horizontal section through the ventilator and showing in dotted lines an additional screen fitting the ventilator for use in railway cars;

Figure 6 is a fragmentary perspective View of the box 14 and the casing 10 in inverted position;

Figure 7 is a fragmentary perspective view partly in section of the casing 10 and one of the shutters and the amount therefor.

Referring to thesedrawings, 10 designates a tubular air duct open at opposite ends and these open ends are preferably flared. Preferably the openA ends of the air duct are disposed diagonally to the axis of the tubular member at 11'. This tubular niem- The upper and lower walls are inwardly bent at 15 and then extended at 14a to provide `a longitudinally extending casing 14 into which the air duct opens. Angle irons are riveted tothe walls 15, and the horizontal flanges v13 of these angle irons extend inward into the yair duct 10, as shown most clearly in Figure. .The casing 14 is closed at its opposite ends by walls 19 and the walls `1411, and the walls 14a and the walls 19 together define an opening 18. The sheet metal from which the casing 14 is formed is'preferably extended in all directions beyond the opening 18 to forinv a frame l17 or support, this frame or support being hollow and having a thickness slightly greater than the thickness of the wall in which the ventilator is to be mounted. Disposed within the inner end of the casing 14 adjacent what may be termed the forward end thereof is a screen 20, one end of this screen being angularly bent at 21 and enfr 14 by means of bolts 22. i Tivotally mounted between the flanges 13 are a series of shutters 23,`these shutters being designed to swing in either direction and being connected for unitary movement.` Each shutter as illustrated is formed ofy a strip of sheet metal which is bent upon itself at 24 so as to provide two arms, one of the arms being longer than the other. The relatively long arm of the shutter is bolted to a supporting iron 25 whose 'ends areangularly bent, as at 26, and disposed between the flanges 13. These ears 26 are pivoted to the flanges by means of the pivot bolts or rivets 27. The free end of the shutter is cut away, as at 28, and disposed in the cutaway portions of all the shutters is a longitudinally extending rod 29 having vears 29, which is illustrated as formed of a folded strip of metal. Through these ears pass the pintles 30 which are disposed within the bends 24 of the shutters. It will thus be end of the device will close against the end wall and all the other shutters will close against each other, thus cutting off the passage of air through the ventilator at the forwardend of the ventilator but permitting the outward passage of air through the ventilator into the tubular duct at the rear end `When the shutters are shifted fully toward `gaged with the adjacent end wall of thecas- -obvious that all the shutters may be shifted the right in Figure 2, they will prevent the exit of air from the interior of the structure to which the ventilator is applied but will permit the inlet of air through the forward end thereof. The shutter rod Q9 may be operated by any suitable means, as for instance a lever, which is pivotally mounted upon the casing and which is pivotally connected to the rod 29. 'This lever may operate Iover a rack or other suitable means whereby the lever is held in adjusted position.

The supporting frame 17 is formed on its lower face to provide downwardly extending ianges 32 which may embrace the glass pane A shown in Figure 1, the ventilator being applied above this pane of glass and the flanges being cut away at the ends, as at 33, to accommodate the frame of the sliding window.

l' have illustrated in Figures l to Llmy ventilator' as it is designed for use with automobiles which always inove in one direction, that is which have a forward end, but in Figure 5, I illustrate in dotted lines my ventilator as having` a second screen 20, thereby adapting the ventilator to a railway car or street car, where the car niay move in either direction and has no distinct forward or rear end. I do not wish to be limited to the use of a single screen at one end of the casing la or the use of two screens at the opposite ends of the casing 151., as it is obviousvthat a screen may be placed along the entire extent of the opening in casing 14. Under these circumstances, the device is particularly adapted for residences,

In the operation of the ventilator, as illustrated in Figures 1 to et, the travel of the vehicle causes air to be forced longitudinally7 through the tubular duct 10. This air will be 'deflected by the first shutter, that is the shutter nearest the forward end of the duct, and a portion of the air will be forced into the interior of the vehicle through the screen 20. The remainder of the air will travel longitudinally alongl the duct and will, therefore, act to suck out the foul air from the interior of the vehicle through the spaces between the shutters. By inclining the shutters with their free edges toward the rear of the vehicle, it is obvious that a greater amount of fresh air will be forced into the vehicle, and by inclining the shutters in the reverse direction, that is carrying their free edges toward the left in Figure 2, it is obvious that a. less amount of fresh air will be forced into the vehicle and a greater suction will be exerted to withdraw the foul air therefrom. By closing the shutters entirely, practically no air will enter the vehicle but at the same time the passage of air through the duct 10 will act to withdraw the foul air from the vehicle through the opening between the rearmost shutter and the end of the casing 14e. Of course, Where this ventilater is used on a railroad ear or street car, as shown in lFigure 5 the shutters should be turned so as to secure the deflection of fresh air into the interior of the car at the forward end of the vehicle and the discharge of the foul air from the rear end of the ventilator. ln houses, of course, the shutters may be adjusted so as to correspond to the direction of the wind passing through the tubular duct 10 and secure a greater or less inlet of fresh air and the discharge of foul or warm air.

t is obvious that this device might be attached to the top of a vehicle and to the top of a car or to the side of a vehicle or car. rlhe screen at the forward end of the ventilator or at both ends of the ventilator, if the ventilator is to be used on a street car or railway car, is to screen the incoming fresh air. The screen is not carried the whole length, as this would tend to impede the outgoing foul air. i

lt will be obvious that' this device may be built into the wall of a vehicle or it may be disposed above the window sash or may be formed as part of the window sash, but preferably it is used as-illustrated in Figure 1, where the device is to be applied to a vehicle such as a motor car.

claim 1. A ventilator comprising a longitudinaliy extending air duct open at opposite ends and having a longitudinally extending opening in its inner wall, a rectangular casing extending from said opening in the in-r ner wall and having top, b ottom` and end walls, there being upper and lower flanges extending into the duct at the upper and lower margins of said opening, a supporting member surrounding the inner end of the casing and through which the easing opens, A

and shutters disposed within the casing and pivoted to said flanges,y the shutters being of a' length between the pivotal axis thereof and the inner end of the shutter to close against each other `and against one or the other of the end walls when the shutters are shifted fully in one direction or the other direction from a middle position, the shutters being connected for unitary movement.

2. A ventilator comprising a longitudinally extending air duct open at opposite ends and having a longitudinally extending opening in its inner wall, a rectangular easing extending from said opening in the inner wall `and having top, bottom and end walls, there being upper and lowerflanges extending into the duet at the upper andI lower margins of said opening, a supporting member surrounding the inner end of the casing and through which the easing opens, and shutters disposed wit-hin the casing, said shutters being attached to supporting irons having angularly projecting ears pivoted to said Hanges and the shutters having an operating rod pivotally connected to the free ends of the shutters, the shutters being of a length to close against each other and against one or the other of the end wallsy of the casing when the shutters are fully shifted from a middle position in `one or the other direction.

3. A ventilator comprising a longitudinally extending air duct open at opposite ends and having a longitudinally extending opening in its inner wall, a. rectangular casing extending from said opening in the in ner wall and having top, bottom and end walls, there 'being upper and lower fianges extending into the duct at the upper and lower margins `of said opening, a supporting member `surrounding Ithe inner end of the casing and through which the casingopens, and shutters disposed within the casing, said shutters being formed each of a folded strip of metal to provide two arms, one of said arms being longer than the other, a supporting iron attached to the outer end Vof the longer arm and having angularly projecting lugs disposed between said flanges and pivoted thereto, the free edge of each shutter being out away, an operating rod extending through the cut away portions of the several shutters, and pintles extending vertically through each shutter at the fold thereof and through the operating rod.

4c. A ventilator of the character described including a tubular duet having flaring open ends and having a longitudinally extending opening at its rear wall, a rectangular casing extending from said opening and engaged with the rear wall, a hollow supporting frame through which the outer end of said casing extends' and to which it is con neoted, a series of pivotally supported shutters mounted within said easing, and means for coincidentiy adjusting the shutters, the supporting frame having parallel, downwardly extending iianges on its lower edge adapted to receive a window between them.

In testimony whereof I hereunto aix my signature.

GROVER C. WALKER. 

